I have reverse engineered a IR transmitter that im going to incorporate in my own design and PCB
For those of you who are far more knowledgeable than I am, can you let me know what purpose the diodes and transistors form in this circuit.
The original board had surface mounted components and believe the original diodes are Glass Zener diodes with a pale blue stripe and no other markings.
The transistors are marked as below. The circuit is gets 9v through a voltage regulator.
On the next board I want to reproduce are some SMC transistors, marked "W1P84" any idea what they could be.
This is the scope output from pin 3 of the 555 before the transistors.
And this was from pin 6 I believe
For those of you who are far more knowledgeable than I am, can you let me know what purpose the diodes and transistors form in this circuit.
The original board had surface mounted components and believe the original diodes are Glass Zener diodes with a pale blue stripe and no other markings.
The transistors are marked as below. The circuit is gets 9v through a voltage regulator.
On the next board I want to reproduce are some SMC transistors, marked "W1P84" any idea what they could be.
This is the scope output from pin 3 of the 555 before the transistors.
And this was from pin 6 I believe
Attachments
-
82.3 KB Views: 13
-
845 KB Views: 13
-
496.2 KB Views: 11
-
63.5 KB Views: 14